Device for intermittently rotating tables of machine-tools.



P ATENTED DEC 15, 1-903.

F. KOMNIGKI. TTENTLY ROTATING TABLES OF MACHINE T0013.-

APPLICATION IILED JUNE 29. 1903.

DEVICE FOR INTERMI 1T0 HODEL.

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"Patented December 15, 1903.

FRANZ KOMNICK, OF ELBING, GERMANY.

DEVICE FOR INTERMITTENTLY- ROTATING TABLES OF MACHlNE-TOOLS.

SPECIFICATION forming part of Letters Patent No. 7 L6,84=9, datedDecember 15, 1903.

' Application-filed June 29, 1903 To all whom it may concern.- 7

Be it known that I, FRANZ KOMNICK, a subject of the Emperor of Germany,and a residentof Elbing, Germany, have invent ed a cer-' tain new andImproved Device for Intermittently Rotating the Tables of Machine-Tools,of which .the following is a full, clear, and eX- aet description.

The present invention consists of an improved device for intermittentlyrotating the tables of machine-tools and the like, and comprises thedetails of construction hereinafter set forth, and particularly pointedout in the claims.

In order to render the present specification easily intelligible,reference is had to the accompanyin g drawings, in which similar lettersof reference denote similar parts throughout the several views.

Figure 1 is an elevation of the device; Fig.

2, a plan of the same; Fig. 3, a plan and side elevation of one of thetooth-segments, and Fig. 4a vertical cross-section through thevertically-disposed segment.

The table e is mounted to rotate around its vertical axis, and therotation is eifected by a horizontally-located tooth-segment (1, adaptedto rock on substantially the same vertical axis as the table, and by asecond tooth-segment 0, having teeth 2, meshing with the saidhorizontally-disposed segment d. The segment 0 is adapted to rock on ahorizontally-disposed pivot c by means of acrank-disk b, mounted on arotary shaft 0, the crank-pin of said disk' being coupled to a suitablepoint of the segment 0 by means of the connecting-rod a. Thehorizontallydisposed segment cl may either be adapted to rock on thevertical axis of the table 6 or it may be guided on the rim or guidewayi, Fig. 4, of the table, and the table is'provided with ratchet-recessesIt, in which a pawl it engages by the pressure of a spring g. In thedrawings the segment (1 is shown guided in the guideway 13 of the tablevrim by means of the guide-blocks f, secured to the said segment.

The operation of the device is very simple. When the shaft 0 is rotated,the-verticallydisposed segment 0 will be rocked by the 'connecting-roda. and will correspondingly rock the segment 01. The pawl hot? thissegment will engage a ratchet notch or recess k of the table e and turnthe same as far as the segment is rocked. The segment 0, and with it d,now be- Serial No. 163,632. (No model.)

gin their return movement, during which the pawl It will slide over thesmooth rim of the table, allowing the same to remain in the positioninto which it was turned on the forward stroke of the segment.

It will be obvious from the foregoing description that by reversing thedirection of the pawl h and providing notches having theirratchet-surface in the opposite direction to those illustrated thedirection of stepwise rotation of the table could be reversed, while theshaft 0 would still rotate in the same direction.

' Bymeans of the present invention the stepwise movement of the tableround a much larger angle is attained than has hitherto been the case bythe ratchet movements hitherto employed.

I claim as my invention- 1. In-an intermittent grip device, incombination, a table, a vertically-disposed toothsegment and means forrocking the same, a horizontally-disposed segmentin engagement with thesame, andmeans for coupling the said horizontally-disposed segment tothe table on its movement in one direction of its reciprocationsubstantially as described.

2. In an intermittent grip device, in combination, a table, avertically-disposed toothsegment and means for rocking the same, a

horizontally-disposed segment in mesh with the same and having aspring-pressed pawl mounted thereon, there being ratchet recesses in therim of the table in which said pawl engages during its movement in onedirection of its reciprocation substantially as described.

3'. In an intermittent grip device, in combination, a table, avertically-disposed toothsegment and a horizontally-disposed segment inmesh with the same,'means for rocking the vertically-disposed segmentand means for horizontally-disposed segment to the table during one beatof its reciprocation substantially as described.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

FRANZ KOMNIGK.

Witnesses PAUL KRAU,

Enron EHLERS.

guiding the horizon tally-disposed segment on the rim of the table,means for coupling the

